Okuyama is a stocker at the supermarket who has no luck with women. His life is thrown upside down when his sister Noriko unexpectedly moves into his small apartment. Okuyama is overcome with lustful thoughts for her, but she regards him simply as a brother.

Cohabitating brother and sister continue their relationships with their lovers from the first two chapters with more teasing of “will they or won’t they”. The third in the "Pink Curtain" series by George Akiyama, which depicts a forbidden love with the power and delicacy of the previous films!

The second film in the series of a brother and sister and their messy relationship with each other and old lovers. This time, will they or won’t they?